Monnit ALTA Wireless Water Temperature Sensor User Manual
by
ALTA Wireless Water Temperature
User Guide
Table of Contents
I. ABOUT THE WIRELESS WATER TEMPERATURE SENSOR
ALTA WIRELESS WATER TEMPERATURE SENSOR FEATURES 1
EXAMPLE APPLICATIONS 1
II. SENSOR SECURITY
SENSOR COMMUNICATION SECURITY
DATA SECURITY ON THE GATEWAY
iMONNIT SECURITY 2
III. ORDER OF OPERATIONS
SET-UP STEPS
IV. REGISTRATION
REGISTERING A WATER TEMPERATURE SENSOR
IV. SETTING UP THE WATER TEMPERATURE SENSOR
INSTALLING BATTERIES
ANTENNA ORIENTATION
V. SENSOR OVERVIEW
MENU SYSTEM
SUPPORT
WARRANTY INFORMATION
CERTIFICATIONS 17
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2
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I. ABOUT THE WIRELESS WATER TEMPERATURE SENSOR
The ALTA Wireless Water Temperature Sensor uses a sealed, type NTC thermistor with 3 ft
lead wires to measure water temperature.
• Accurate to ± 1° C (± 1.8° F)
• Increased accuracy by user calibration to ± 0.25° C (± 0.45° F)
• Probe temperature range of -40°C to +100°C (-40°F to +212°F)
• Sealed, 3 ft leaded wires
The ALTA Wireless Water Temperature Sensor can collect temperature data of water
or other non-combustible liquids using a sealed NTC thermistor with 3 foot lead wires.
The sensor is programmed to sleep for a user dened time interval (heartbeat) and
then wakeup, send power to the NTC Thermistor and wait for it to stabilize, and convert
the analog data, mathematically compute the temperature and transmit the data to the
gateway. To stay within the abilities of the processor, the temperature is computed o a
data table provided by the manufacturer. Temperature data can be displayed in degrees
Fahrenheit or Celsius.
Industry leading 25 month NIST certied product included on leaded temperature sensors.
ALTA WIRELESS WATER TEMPERATURE FEATURES
• Wireless range of 1,200+ feet through 12+ walls *
• Frequency-Hopping Spread Spectrum (FHSS)
• Interference immunity
• Power management for longer battery life **(12+ years on AA batteries)
• Encrypt-RF
data messages)
• Onboard data memory stores up to hundreds of readings per sensor:
- 10-minute heartbeats = 3.5 days
- 2-hour heartbeats = 42 days
• Over-the-air updates (future proof)
• Free iMonnit basic online wireless sensor monitoring and notication system to
congure sensors, view data and set alerts via SMS text and email
®
Security (Die-Hellman Key Exchange + AES-128 CBC for sensor
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables. Other power options are also
available.
EXAMPLE APPLICATIONS
• Water/liquid storage tanks
• Manufacturing processes
• Swimming pools
• Aquariums
Many additional applications.
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II. SENSOR SECURITY
The ALTA Wireless Water Temperature Sensor has been designed and built to securely
manage data from sensors monitoring your environment and equipment. Hacking from
botnets are in the headlines, Monnit Corporation has taken extreme measures to ensure
your data security is handled with the utmost care and attention to detail. The same
methods utilized by nancial institutions to transmit data are also used in Monnit security
infrastructure. Security features of the gateway include tamper proof network interfaces,
data encryption, and bank-grade security.
Monnit’s proprietary sensor protocol uses low transmit power and specialized radio
equipment to transmit application data. Wireless devices listening on open communication
protocols cannot eavesdrop on sensors. Packet level encryption and verication is key
to ensuring trac isn’t altered between sensors and gateways. Paired with best-in-class
range and power consumption protocol, all data is transmitted securely from your devices.
Thereby ensuring a smooth, worry-free, experience.
SENSOR COMMUNICATION SECURITY
Monnit sensor to gateway secure wireless tunnel is generated using ECDH-256 (Elliptic
Curve Die-Hellman) public key exchange to generate a unique symmetric key between
each pair of devices. Sensors and gateways use this link specic key to process packet
level data with hardware accelerated 128-bit AES encryption which minimizes power
consumption to provide industry best battery life. Thanks to this combination, Monnit
proudly oers robust bank-grade security at every level.
DATA SECURITY ON THE GATEWAY
The ALTA gateways are designed to prevent prying eyes from accessing the data that is
stored on the sensors. Gateways do not run on an o the shelf multi-function OS (operating
system). Instead they run a purpose specic real-time embedded state machine that cannot
be hacked to run malicious processes. There are also no active interface listeners that
can be used to gain access to the device over the network. The fortied gateway secures
your data from attackers and secures the gateway from becoming a relay for malicious
programs.
iMONNIT SECURITY
iMonnit is the online software and central hub for conguring your device settings. All
data is secured on dedicated servers operating Microsoft SQL Server. Access is granted
through the iMonnit user interface, or an Application Programming Interface (API)
safeguarded by 256-bit Transport Layer Security (TLS 1.2) encryption. TLS is blanket of
protection to encrypt all data exchanged between iMonnit and you. The same encryption
is available to you whether you are a Basic user of Premiere user of iMonnit. You can rest
assured that your data is safe with iMonnit.
III. ORDER OF OPERATIONS
It is important to understand the order of operations for activating your ALTA Water Temperature
Sensor. If done out of place, your meter may have trouble communicating with iMonnit. Please
consult the steps below to make sure you are performing your setup correctly.
SET UP STEPS
1. Register your gateway on iMonnit.
Your gateway must be registered rst to verify communication between the device and
iMonnit. Any sensors or meters you wish to add onto your network must come after the
gateway.
2. Register your Water Temperature Sensor on iMonnit.
After you’ve registered your gateway, it’s time to add your Water Temperature Sensor to the
iMonnit account.
3. Install batteries in your sensor.
After your sensor is added and your gateway is communicating with iMonnit, you can install the
batteries. Your Water Temperature Sensor will either take coin-cell, AA batteries or Industrial
batteries, depending on the type.
4. Mount your sensor.
Place your sensor in the desired spot using screws or double-sided tape. Make sure you
have the correct antenna orientation to receive a strong signal.
Each of these steps are covered in more detail in the following sections.
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IV. REGISTRATION
Pull
(sensor away from base)
Pinch
(press in on the sides)
Press
(sensor back into base)
CR2032 BATTERY
+
_
CR2032 BATTERY
If this is your rst time using the iMonnit online portal, you will need to create a new
account. If you have already created an account, start by logging in. For instructions on
how to register for an iMonnit account, please consult the iMonnit User Guide viewable at
monnit.com/support/documentation.
REGISTERING THE WATER TEMPERATURE SENSOR
You will need to enter the Device ID and the Security Code from your Water Temperature
Sensor in the corresponding text boxes. Use the camera on your smartphone to scan the
QR code on your sensor and gateway. If you do not have a camera on your phone, or the
system is not accepting the QR code, you may enter the Device ID and Security Code
manually.
• The Device ID is a unique number located on each device label.
• Next you’ll be asked to enter the Security Code (SC) on your device. A security
code will be all letters and must be entered in upper case, no numbers. It can also
be found on the barcode label of your gateway.
V. SETTING UP YOUR WATER TEMPERATURE SENSOR
When you are nished adding the sensor to your account, the next step is to insert the
battery. The type of battery you use will depend on the category of your sensor. ALTA
Wireless Water Temperature Sensors will either be powered by commercial coin cell, AA,
or an industrial battery.
INSTALLING BATTERIES
ALTA commercial sensors are powered by AA or CR2032 coin cell batteries. Industrial
sensors need a 3.6V Lithium battery supplied from Monnit or another industrial battery
supplier. Monnit encourages customers to recycle all old batteries.
Coin Cell
The lifespan of a standard CR2032 coin cell battery in an
ALTA Water Temperature Sensor is 3+ years.
Install a coin cell battery by rst taking the sensor and
pinching the sides of the enclosure. Gently pull up the
enclosure, separating the sensor from its base. Then
slide a new CR2032 coin cell battery with the positive
side facing toward the base. Press the enclosure back to
together; you’ll hear a small click.
Lastly, open iMonnit select Sensors from the navigation menu. Verify that iMonnit is showing the sensor has a full battery level.
When completed, select the “Submit” button.
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AA Batteries
The standard version of this sensor is powered by two
replaceable 1.5 V AA sized batteries (included with
purchase). The typical battery life is 10 -12 years.
This sensor is also available with a line power option.
The line powered version of this sensor has a barrel
power connector allowing it to be powered by a
standard 3.0–3.6 V power supply. The line powered
version also uses two standard 1.5 V AA batteries as
backup for uninterrupted operation in the event of line
power outage.
Power options must be selected at time of purchase, as the internal hardware of the sensor
must be changed to support the selected power requirements.
Place batteries in the device by rst taking the sensor and sliding the battery door open. Insert
fresh AA batteries in the carriage, then shut the battery door.
Complete the process by opening up iMonnit and selecting Sensors from the main navigation
menu. Verify that iMonnit is showing the sensor has a full battery level.
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